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Title

Properties of γ -decaying isomers and isomeric ratios in the Sn 100 region

AuthorsPark, J.; Krücken, R.; Lubos, D.; Gernhäuser, R.; Lewitowicz, M.; Nishimura, S.; Jungclaus, Andrea ; Kameda, D.; Suzuki, H.; Takeda, H.; Wang, Z.
Issue Date9-Oct-2017
PublisherAmerican Physical Society
CitationPhysical Review C 96: 044311 (2017)
AbstractHalf-lives and energies of γ rays emitted in the decay of isomeric states of nuclei in the vicinity of the doubly magic Sn100 were measured in a decay spectroscopy experiment at Rikagaku Kenkyusho (The Institute of Physical and Chemical Research) of Japan Nishina Center. The measured half-lives, some with improved precision, are consistent with literature values. Three new results include a 55-keV E2γ ray from a new (4+) isomer with T1/2=0.23(6)μs in Rh92, a 44-keV E2γ ray from the (15+) isomer in Ag96, and T1/2(6+)=13(2) ns in Cd98. Shell-model calculations of electromagnetic transition strengths in the (p1/2,g9/2) model space agree with the experimental results. In addition, experimental isomeric ratios were compared to the theoretical predictions derived with an abrasion-ablation model and the sharp cutoff model. The results agreed within a factor of 2 for most isomers. From the nonobservation of time-delayed γ rays in Sn100, new constraints on the T1/2, γ-ray energy, and internal conversion coefficients are proposed for the hypothetical isomer in Sn100.
DescriptionJ. Park et al.-- 10 pags., 10 figs., 2 tabs. -- Publisher's Note / Erratum: Phys. Rev. C 96, 049901 (2017)
Publisher version (URL)https://doi.org/10.1103/PhysRevC.96.044311
URIhttp://hdl.handle.net/10261/161894
Identifiersdoi: 10.1103/PhysRevC.96.044311
issn: 2469-9993
Appears in Collections:(CFMAC-IEM) Artículos
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